Truffles
Truffles.
Adding slices of truffles makes any dish sexier. From pastas to risottos, just the sound of "truffles" rolling off of one's tongue is enough to make anyone blush. Plus, you'll sound much more sophisticated offering truffle shavings to your dining partner's platter.
Here are some recipes to try:
Truffle Pasta [Adventure in Cooking]
Truffled Red Wine Risotto with Parmesan Broth [Bon Appetit]